        `define XX_FOO
        `define M_BAR(x)
        `define M_BAZ
        ...
        `ifdef NEVER
          `undef M_BAZ  // Emacs will see this and not `undef M_BAZ
        `endif
        ...
        /*AUTOUNDEF*/
        // Beginning of automatic undefs
        `undef M_BAR
        `undef XX_FOO
        // End of automatics

// Local Variables:
// indent-tabs-mode: nil
// End:
